UTIL_API.md

Eruda Util Documentation

$

jQuery like style dom manipulator.

Available methods

offset, hide, show, first, last, get, eq, on, off, html, text, val, css, attr, data, rmAttr, remove, addClass, rmClass, toggleClass, hasClass, append, prepend, before, after

var $btn = $('#btn');
$btn.html('eustia');
$btn.addClass('btn');
$btn.show();
$btn.on('click', function ()
{
    // Do something...
});

$attr

Element attribute manipulation.

Get the value of an attribute for the first element in the set of matched elements.

Name	Type	Desc
element	string array element	Elements to manipulate
name	string	Attribute name
return	string	Attribute value of first element

Set one or more attributes for the set of matched elements.

Name	Type	Desc
element	string array element	Elements to manipulate
name	string	Attribute name
value	string	Attribute value

Name	Type	Desc
element	string array element	Elements to manipulate
attributes	object	Object of attribute-value pairs to set

remove

Remove an attribute from each element in the set of matched elements.

Name	Type	Desc
element	string array element	Elements to manipulate
name	string	Attribute name

$attr('#test', 'attr1', 'test');
$attr('#test', 'attr1'); // -> test
$attr.remove('#test', 'attr1');
$attr('#test', {
    'attr1': 'test',
    'attr2': 'test'
});

$class

Element class manipulations.

add

Add the specified class(es) to each element in the set of matched elements.

Name	Type	Desc
element	string array element	Elements to manipulate
names	string array	Classes to add

has

Determine whether any of the matched elements are assigned the given class.

Name	Type	Desc
element	string array element	Elements to manipulate
name	string	Class name
return	boolean	True if elements has given class name

toggle

Add or remove one or more classes from each element in the set of matched elements, depending on either the class's presence or the value of the state argument.

Name	Type	Desc
element	string array element	Elements to manipulate
name	string	Class name to toggle

remove

Remove a single class, multiple classes, or all classes from each element in the set of matched elements.

Name	Type	Desc
element	string array element	Elements to manipulate
names	string	Class names to remove

$class.add('#test', 'class1');
$class.add('#test', ['class1', 'class2']);
$class.has('#test', 'class1'); // -> true
$class.remove('#test', 'class1');
$class.has('#test', 'class1'); // -> false
$class.toggle('#test', 'class1');
$class.has('#test', 'class1'); // -> true

$css

Element css manipulation.

Get the computed style properties for the first element in the set of matched elements.

Name	Type	Desc
element	string array element	Elements to manipulate
name	string	Property name
return	string	Css value of first element

Set one or more CSS properties for the set of matched elements.

Name	Type	Desc
element	string array element	Elements to manipulate
name	string	Property name
value	string	Css value

Name	Type	Desc
element	string array element	Elements to manipulate
properties	object	Object of css-value pairs to set

$css('#test', {
    'color': '#fff',
    'background': 'black'
});
$css('#test', 'display', 'block');
$css('#test', 'color'); // -> #fff

$data

Wrapper of $attr, adds data- prefix to keys.

$data('#test', 'attr1', 'eustia');

$event

bind events to certain dom elements.

function clickHandler()
{
    // Do something...
}
$event.on('#test', 'click', clickHandler);
$event.off('#test', 'click', clickHandler);

$insert

Insert html on different position.

before

Insert content before elements.

after

Insert content after elements.

prepend

Insert content to the beginning of elements.

append

Insert content to the end of elements.

Name	Type	Desc
element	string array element	Elements to manipulate
content	string	Html strings

// <div id="test"><div class="mark"></div></div>
$insert.before('#test', '<div>eris</div>');
// -> <div>eris</div><div id="test"><div class="mark"></div></div>
$insert.after('#test', '<div>eris</div>');
// -> <div id="test"><div class="mark"></div></div><div>eris</div>
$insert.prepend('#test', '<div>eris</div>');
// -> <div id="test"><div>eris</div><div class="mark"></div></div>
$insert.append('#test', '<div>eris</div>');
// -> <div id="test"><div class="mark"></div><div>eris</div></div>

$offset

Get the position of the element in document.

Name	Type	Desc
element	string array element	Elements to get offset

$offset('#test'); // -> {left: 0, top: 0, width: 0, height: 0}

$property

Element property html, text, val getter and setter.

html

Get the HTML contents of the first element in the set of matched elements or set the HTML contents of every matched element.

text

Get the combined text contents of each element in the set of matched elements, including their descendants, or set the text contents of the matched elements.

val

Get the current value of the first element in the set of matched elements or set the value of every matched element.

$property.html('#test', 'eris');
$property.html('#test'); // -> eris

$remove

Remove the set of matched elements from the DOM.

Name	Type	Desc
element	string array element	Elements to delete

$remove('#test');

$safeEls

Convert value into an array, if it's a string, do querySelector.

Name	Type	Desc
value	element array string	Value to convert
return	array	Array of elements

$safeEls('.test'); // -> Array of elements with test class

$show

Show elements.

Name	Type	Desc
element	string array element	Elements to show

$show('#test');

Class

Create JavaScript class.

Name	Type	Desc
methods	object	Public methods
[statics]	object	Static methods
return	function	Function used to create instances

var People = Class({
    initialize: function (name, age)
    {
        this.name = name;
        this.age = age;
    },
    introduce: function ()
    {
        return 'I am ' + this.name + ', ' + this.age + ' years old.'.
    }
});

var Student = People.extend({
    initialize: function (name, age, school)
    {
        this.callSuper(People, 'initialize', arguments);

        this.school = school;
    },
    introduce: function ()
    {
        return this.callSuper(People, 'introduce') + '\n I study at ' + this.school + '.'.
    }
}, {
    is: function (obj)
    {
        return obj instanceof Student;
    }
});

var a = new Student('allen', 17, 'Hogwarts');
a.introduce(); // -> 'I am allen, 17 years old. \n I study at Hogwarts.'
Student.is(a); // -> true

Emitter

Event emitter class which provides observer pattern.

on

Bind event.

off

Unbind event.

once

Bind event that trigger once.

Name	Type	Desc
event	string	Event name
listener	function	Event listener

emit

Emit event.

Name	Type	Desc
event	string	Event name
...args	*	Arguments passed to listener

mixin

[static] Mixin object class methods.

Name	Type	Desc
obj	object	Object to mixin

var event = new Emitter();
event.on('test', function () { console.log('test') });
event.emit('test'); // Logs out 'test'.
Emitter.mixin({});

Select

Simple wrapper of querySelectorAll to make dom selection easier.

constructor

Name	Type	Desc
selector	string	Dom selector string

find

Get desdendants of current matched elements.

Name	Type	Desc
selector	string	Dom selector string

each

Iterate over matched elements.

Name	Type	Desc
fn	function	Function to execute for each element

var $test = new Select('#test');
$test.find('.test').each(function (idx, element)
{
    // Manipulate dom nodes
});

Url

Simple url manipulator.

constructor

Name	Type	Desc
[url=window.location]	string	Url string

setQuery

Set query value.

Name	Type	Desc
name	string	Query name
value	string	Query value
return	Url	this

Name	Type	Desc
names	object	query object
return	Url	this

rmQuery

Remove query value.

Name	Type	Desc
name	string array	Query name
return	Url	this

parse

[static] Parse url into an object.

Name	Type	Desc
url	string	Url string
return	object	Url object

stringify

[static] Stringify url object into a string.

Name	Type	Desc
url	object	Url object
return	string	Url string

An url object contains the following properties:

Name	Desc
protocol	The protocol scheme of the URL (e.g. http:)
slashes	A boolean which indicates whether the protocol is followed by two forward slashes (//)
auth	Authentication information portion (e.g. username:password)
hostname	Host name without port number
port	Optional port number
pathname	URL path
query	Parsed object containing query string
hash	The "fragment" portion of the URL including the pound-sign (#)

var url = new Url('http://example.com:8080?eruda=true');
console.log(url.port); // -> '8080'
url.query.foo = 'bar';
url.rmQuery('eruda');
utl.toString(); // -> 'http://example.com:8080/?foo=bar'

allKeys

Retrieve all the names of object's own and inherited properties.

Name	Type	Desc
obj	object	Object to query
return	array	Array of all property names

Members of Object's prototype won't be retrieved.

var obj = Object.create({zero: 0});
obj.one = 1;
allKeys(obj) // -> ['zero', 'one']

before

Create a function that invokes less than n times.

Name	Type	Desc
n	number	Number of calls at which fn is no longer invoked
fn	function	Function to restrict
return	function	New restricted function

Subsequent calls to the created function return the result of the last fn invocation.

$(element).on('click', before(5, function() {}));
// -> allow function to be call 4 times at last.

camelCase

Convert string to "camelCase".

Name	Type	Desc
str	string	String to convert
return	string	Camel cased string

camelCase('foo-bar'); // -> fooBar
camelCase('foo bar'); // -> fooBar
camelCase('foo_bar'); // -> fooBar
camelCase('foo.bar'); // -> fooBar

contain

Check if the value is present in the list.

Name	Type	Desc
array	array	Target list
value	*	Value to check
return	boolean	True if value is present in the list

contain([1, 2, 3], 1); // -> true

cookie

Simple api for handling browser cookies.

get

Get cookie value.

Name	Type	Desc
key	string	Cookie key
return	string	Corresponding cookie value

set

Set cookie value.

Name	Type	Desc
key	string	Cookie key
val	string	Cookie value
[options]	object	Cookie options
return	exports	Module cookie

remove

Remove cookie value.

Name	Type	Desc
key	string	Cookie key
[options]	object	Cookie options
return	exports	Module cookie

cookie.set('a', '1', {path: '/'});
cookie.get('a'); // -> '1'
cookie.remove('a');

createAssigner

Used to create extend, extendOwn and defaults.

Name	Type	Desc
keysFn	function	Function to get object keys
defaults	boolean	No override when set to true
return	function	Result function, extend...

dateFormat

Simple but extremely useful date format function.

Name	Type	Desc
[date=new Date]	Date	Date object to format
mask	string	Format mask
[utc=false]	boolean	UTC or not
[gmt=false]	boolean	GMT or not

Mask	Description
d	Day of the month as digits; no leading zero for single-digit days
dd	Day of the month as digits; leading zero for single-digit days
ddd	Day of the week as a three-letter abbreviation
dddd	Day of the week as its full name
m	Month as digits; no leading zero for single-digit months
mm	Month as digits; leading zero for single-digit months
mmm	Month as a three-letter abbreviation
mmmm	Month as its full name
yy	Year as last two digits; leading zero for years less than 10
yyyy	Year represented by four digits
h	Hours; no leading zero for single-digit hours (12-hour clock)
hh	Hours; leading zero for single-digit hours (12-hour clock)
H	Hours; no leading zero for single-digit hours (24-hour clock)
HH	Hours; leading zero for single-digit hours (24-hour clock)
M	Minutes; no leading zero for single-digit minutes
MM	Minutes; leading zero for single-digit minutes
s	Seconds; no leading zero for single-digit seconds
ss	Seconds; leading zero for single-digit seconds
l L	Milliseconds. l gives 3 digits. L gives 2 digits
t	Lowercase, single-character time marker string: a or p
tt	Lowercase, two-character time marker string: am or pm
T	Uppercase, single-character time marker string: A or P
TT	Uppercase, two-character time marker string: AM or PM
Z	US timezone abbreviation, e.g. EST or MDT
o	GMT/UTC timezone offset, e.g. -0500 or +0230
S	The date's ordinal suffix (st, nd, rd, or th)
UTC:	Must be the first four characters of the mask

dateFormat('isoDate'); // -> 2016-11-19
dateFormat('yyyy-mm-dd HH:MM:ss'); // -> 2016-11-19 19:00:04
dateFormat(new Date(), 'yyyy-mm-dd'); // -> 2016-11-19

defaults

Fill in undefined properties in object with the first value present in the following list of defaults objects.

Name	Type	Desc
obj	object	Destination object
*src	object	Sources objects
return	object	Destination object

defaults({name: 'RedHood'}, {name: 'Unknown', age: 24}); // -> {name: 'RedHood', age: 24}

delegate

Event delegation.

add

Add event delegation.

Name	Type	Desc
el	element	Parent element
type	string	Event type
selector	string	Match selector
cb	function	Event callback

remove

Remove event delegation.

var container = document.getElementById('container');
function clickHandler()
{
    // Do something...
}
delegate.add(container, 'click', '.children', clickHandler);
delegate.remove(container, 'click', '.children', clickHandler);

each

Iterates over elements of collection and invokes iteratee for each element.

Name	Type	Desc
obj	object array	Collection to iterate over
iteratee	function	Function invoked per iteration
[ctx]	*	Function context

each({'a': 1, 'b': 2}, function (val, key) {});

endWith

Check if string ends with the given target string.

Name	Type	Desc
str	string	The string to search
suffix	string	String suffix
return	boolean	True if string ends with target

endWith('ab', 'b'); // -> true

escape

Escapes a string for insertion into HTML, replacing &, <, >, ", `, and ' characters.

Name	Type	Desc
str	string	String to escape
return	string	Escaped string

escape('You & Me'); -> // -> 'You & Me'

escapeJsonStr

No documentation.

escapeRegExp

Escape special chars to be used as literals in RegExp constructors.

Name	Type	Desc
str	string	String to escape
return	string	Escaped string

escapeRegExp('[eris]'); // -> '\\[eris\\]'

evalCss

No documentation.

extend

Copy all of the properties in the source objects over to the destination object.

Name	Type	Desc
obj	object	Destination object
...src	object	Sources objects
return	object	Destination object

extend({name: 'RedHood'}, {age: 24}); // -> {name: 'RedHood', age: 24}

extendOwn

Like extend, but only copies own properties over to the destination object.

Name	Type	Desc
obj	object	Destination object
*src	object	Sources objects
return	object	Destination object

extendOwn({name: 'RedHood'}, {age: 24}); // -> {name: 'RedHood', age: 24}

filter

Iterates over elements of collection, returning an array of all the values that pass a truth test.

Name	Type	Desc
obj	array	Collection to iterate over
predicate	function	Function invoked per iteration
[ctx]	*	Predicate context
return	array	Array of all values that pass predicate

filter([1, 2, 3, 4, 5], function (val)
{
    return val % 2 === 0;
}); // -> [2, 4]

get

No documentation.

getFileName

No documentation.

getObjType

No documentation.

has

Checks if key is a direct property.

Name	Type	Desc
obj	object	Object to query
key	string	Path to check
return	boolean	True if key is a direct property

has({one: 1}, 'one'); // -> true

identity

Return the first argument given.

Name	Type	Desc
val	*	Any value
return	*	Given value

identity('a'); // -> 'a'

idxOf

Get the index at which the first occurrence of value.

Name	Type	Desc
arr	array	Array to search
val	*	Value to search for
[fromIdx=0]	number	Index to search from

idxOf([1, 2, 1, 2], 2, 2); // -> 3

inherits

Inherit the prototype methods from one constructor into another.

Name	Type	Desc
Class	function	Child Class
SuperClass	function	Super Class

function People(name)
{
    this._name = name;
}
People.prototype = {
    getName: function ()
    {
        return this._name;
    }
};
function Student(name)
{
    this._name = name;
}
inherits(Student, People);
var s = new Student('RedHood');
s.getName(); // -> 'RedHood'

isArgs

Check if value is classified as an arguments object.

Name	Type	Desc
value	*	Value to check
return	boolean	True if value is an arguments object

(function () {
    isArgs(arguments); // -> true
})();

isArr

Check if value is an Array object.

Name	Type	Desc
val	*	The value to check
return	boolean	True if value is an Array object

isArr([]); // -> true
isArr({}); // -> false

isArrLike

Check if value is array-like.

Name	Type	Desc
value	*	Value to check
return	boolean	True if value is array like

Function returns false.

isArrLike('test'); // -> true
isArrLike(document.body.children); // -> true;
isArrLike([1, 2, 3]); // -> true

isBool

Check if value is a boolean primitive.

Name	Type	Desc
val	*	Value to check
return	boolean	True if value is a boolean

isBool(true); // -> true
isBool(false); // -> true
isBool(1); // -> false

isCrossOrig

No documentation.

isDate

Check if value is classified as a Date object.

Name	Type	Desc
val	*	value to check
return	boolean	True if value is a Date object

isDate(new Date()); // -> true

isEl

Check if value is a DOM element.

Name	Type	Desc
val	*	Value to check
return	boolean	True if value is a DOM element

isEl(document.body); // -> true

isEmpty

Check if value is an empty object or array.

Name	Type	Desc
val	*	Value to check
return	boolean	True if value is empty

isEmpty([]); // -> true
isEmpty({}); // -> true

isErr

Check if value is an error.

Name	Type	Desc
val	*	Value to check
return	boolean	True if value is an error

isErr(new Error()); // -> true

isErudaEl

No documentation.

isFn

Check if value is a function.

Name	Type	Desc
val	*	Value to check
return	boolean	True if value is a function

Generator function is also classified as true.

isFn(function() {}); // -> true
isFn(function*() {}); // -> true

isMatch

Check if keys and values in src are contained in obj.

Name	Type	Desc
obj	object	Object to inspect
src	object	Object of property values to match
return	boolean	True if object is match

isMatch({a: 1, b: 2}, {a: 1}); // -> true

isNull

Check if value is an Null.

Name	Type	Desc
value	*	Value to check
return	boolean	True if value is an Null

isNull(null); // -> true

isNum

Checks if value is classified as a Number primitive or object.

Name	Type	Desc
value	*	Value to check
return	boolean	True if value is correctly classified

isObj

Check if value is the language type of Object.

Name	Type	Desc
val	*	Value to check
return	boolean	True if value is an object

Language Spec

isObj({}); // -> true
isObj([]); // -> true

isRegExp

Check if value is a regular expression.

Name	Type	Desc
val	*	Value to check
return	boolean	True if value is a regular expression

isRegExp(/a/); // -> true

isStr

Check if value is a string primitive.

Name	Type	Desc
val	*	Value to check
return	boolean	True if value is a string primitive

isStr('eris'); // -> true

isUndef

Check if value is undefined.

Name	Type	Desc
val	*	Value to check
return	boolean	True if value is undefined

isUndef(void 0); // -> true
isUndef(null); // -> false

kebabCase

Convert string to "kebabCase".

Name	Type	Desc
str	string	String to convert
return	string	Kebab cased string

kebabCase('fooBar'); // -> foo-bar
kebabCase('foo bar'); // -> foo-bar
kebabCase('foo_bar'); // -> foo-bar
kebabCase('foo.bar'); // -> foo-bar

keys

Create an array of the own enumerable property names of object.

Name	Type	Desc
obj	object	Object to query
return	array	Array of property names

last

Get the last element of array.

Name	Type	Desc
arr	array	The array to query
return	*	The last element of array

last([1, 2]); // -> 2

loadJs

Inject script tag into page with given src value.

Name	Type	Desc
src	string	Script source
cb	function	Onload callback

loadJs('main.js', function ()
{
    // Do something...
});

lpad

Pad string on the left side if it's shorter than length.

Name	Type	Desc
str	string	String to pad
len	number	Padding length
[chars]	string	String used as padding
return	string	Resulted string

lpad('a', 5); // -> '    a'
lpad('a', 5, '-'); // -> '----a'
lpad('abc', 3, '-'); // -> 'abc'
lpad('abc', 5, 'ab'); // -> 'ababc'

ltrim

Remove chars or white-spaces from beginning of string.

Name	Type	Desc
str	string	String to trim
chars	string array	Characters to trim
return	string	Trimmed string

ltrim(' abc  '); // -> 'abc  '
ltrim('_abc_', '_'); // -> 'abc_'
ltrim('_abc_', ['a', '_']); // -> 'bc_'

map

Create an array of values by running each element in collection through iteratee.

Name	Type	Desc
obj	array object	Collection to iterate over
iteratee	function	Function invoked per iteration
[ctx]	*	Function context
return	array	New mapped array

map([4, 8], function (n) { return n * n; }); // -> [16, 64]

matcher

Return a predicate function that checks if attrs are contained in an object.

Name	Type	Desc
attrs	object	Object of property values to match
return	function	New predicate function

var objects = [
    {a: 1, b: 2, c: 3 },
    {a: 4, b: 5, c: 6 }
];
filter(objects, matcher({a: 4, c: 6 })); // -> [{a: 4, b: 5, c: 6 }]

memStorage

Memory-backed implementation of the Web Storage API.

A replacement for environments where localStorage or sessionStorage is not available.

var localStorage = window.localStorage || memStorage;
localStorage.setItem('test', 'eris');

noop

A no-operation function.

noop(); // Does nothing

now

Gets the number of milliseconds that have elapsed since the Unix epoch.

now(); // -> 1468826678701

objToStr

Alias of Object.prototype.toString.

Name	Type	Desc
value	*	Source value
return	string	String representation of given value

objToStr(5); // -> '[object Number]'

once

Create a function that invokes once.

Name	Type	Desc
fn	function	Function to restrict
return	function	New restricted function

function init() {};
var initOnce = once(init);
initOnce();
initOnce(); // -> init is invoked once

optimizeCb

Used for function context binding.

orientation

No documentation.

partial

Partially apply a function by filling in given arguments.

Name	Type	Desc
fn	function	Function to partially apply arguments to
partials	...*	Arguments to be partially applied
return	function	New partially applied function

var sub5 = partial(function (a, b) { return b - a }, 5);
sub(20); // -> 15

pxToNum

No documentation.

query

Parse and stringify url query strings.

parse

Parse a query string into an object.

Name	Type	Desc
str	string	Query string
return	object	Query object

stringify

Stringify an object into a query string.

Name	Type	Desc
obj	object	Query object
return	string	Query string

query.parse('foo=bar&eruda=true'); // -> {foo: 'bar', eruda: 'true'}
query.stringify({foo: 'bar', eruda: 'true'}); // -> 'foo=bar&eruda=true'
query.parse('name=eruda&name=eustia'); // -> {name: ['eruda', 'eustia']}

repeat

Repeat string n-times.

Name	Type	Desc
str	string	String to repeat
n	number	Repeat times
return	string	Repeated string

repeat('a', 3); // -> 'aaa'
repeat('ab', 2); // -> 'abab'
repeat('*', 0); // -> ''

restArgs

This accumulates the arguments passed into an array, after a given index.

Name	Type	Desc
function	function	Function that needs rest parameters
startIndex	number	The start index to accumulates
return	function	Generated function with rest parameters

var paramArr = _.restArgs(function (rest) { return rest });
paramArr(1, 2, 3, 4); // -> [1, 2, 3, 4]

rtrim

Remove chars or white-spaces from end of string.

Name	Type	Desc
str	string	String to trim
chars	string array	Characters to trim
return	string	Trimmed string

rtrim(' abc  '); // -> ' abc'
rtrim('_abc_', '_'); // -> '_abc'
rtrim('_abc_', ['c', '_']); // -> '_ab'

safeCb

Create callback based on input value.

safeGet

Get object property, don't throw undefined error.

Name	Type	Desc
obj	object	Object to query
path	array string	Path of property to get
return	*	Target value or undefined

var obj = {a: {aa: {aaa: 1}}};
safeGet(obj, 'a.aa.aaa'); // -> 1
safeGet(obj, ['a', 'aa']); // -> {aaa: 1}
safeGet(obj, 'a.b'); // -> undefined

safeStorage

No documentation.

slice

Create slice of source array or array-like object.

Name	Type	Desc
array	array	Array to slice
[start=0]	number	Start position
[end=array.length]	number	End position, not included

slice([1, 2, 3, 4], 1, 2); // -> [2]

some

Check if predicate return truthy for any element.

Name	Type	Desc
obj	array object	Collection to iterate over
predicate	function	Function to invoked per iteration
ctx	*	Predicate context
return	boolean	True if any element passes the predicate check

some([2, 5], function (val)
{
    return val % 2 === 0;
}); // -> true

splitCase

Split different string case to an array.

Name	Type	Desc
str	string	String to split
return	array	Result array

splitCase('foo-bar'); // -> ['foo', 'bar']
splitCase('foo bar'); // -> ['foo', 'bar']
splitCase('foo_bar'); // -> ['foo', 'bar']
splitCase('foo.bar'); // -> ['foo', 'bar']
splitCase('fooBar'); // -> ['foo', 'bar']
splitCase('foo-Bar'); // -> ['foo', 'bar']

startWith

Check if string starts with the given target string.

Name	Type	Desc
str	string	String to search
prefix	string	String prefix
return	boolean	True if string starts with prefix

startWith('ab', 'a'); // -> true

stripHtmlTag

Strip html tags from a string.

Name	Type	Desc
str	string	String to strip
return	string	Resulted string

stripHtmlTag('<p>Hello</p>'); // -> 'Hello'

toArr

Convert value to an array.

Name	Type	Desc
val	*	Value to convert
return	array	Converted array

toArr({a: 1, b: 2}); // -> [{a: 1, b: 2}]
toArr('abc'); // -> ['abc']
toArr(1); // -> []
toArr(null); // -> []

toInt

Convert value to an integer.

Name	Type	Desc
val	*	Value to convert
return	number	Converted integer

toInt(1.1); // -> 1
toInt(undefined); // -> 0

toNum

Convert value to a number.

Name	Type	Desc
val	*	Value to process
return	number	Resulted number

toNum('5'); // -> 5

toStr

Convert value to a string.

Name	Type	Desc
val	*	Value to convert
return	string	Resulted string

toStr(null); // -> ''
toStr(1); // -> '1'
toStr(false); // -> 'false'
toStr([1, 2, 3]); // -> '1,2,3'

trim

Remove chars or white-spaces from beginning end of string.

Name	Type	Desc
str	string	String to trim
chars	string array	Characters to trim
return	string	Trimmed string

trim(' abc  '); // -> 'abc'
trim('_abc_', '_'); // -> 'abc'
trim('_abc_', ['a', 'c', '_']); // -> 'b'

uniqId

Generate a globally-unique id.

Name	Type	Desc
prefix	string	Id prefix
return	string	Globally-unique id

uniqId('eusita_'); // -> 'eustia_xxx'

unique

Create duplicate-free version of an array.

Name	Type	Desc
arr	array	Array to inspect
[compare]	function	Function for comparing values
return	array	New duplicate free array

unique([1, 2, 3, 1]); // -> [1, 2, 3]

upperFirst

Convert the first character of string to upper case.

Name	Type	Desc
str	string	String to convert
return	string	Converted string

upperFirst('red'); // -> Red

values

Creates an array of the own enumerable property values of object.

Name	Type	Desc
obj	object	Object to query
return	array	Array of property values

values({one: 1, two: 2}); // -> [1, 2]

wrap

Wrap the function inside a wrapper function, passing it as the first argument.

Name	Type	Desc
fn	*	Function to wrap
wrapper	function	Wrapper function
return	function	New function

var p = wrap(escape, function(fn, text)
{
    return '<p>' + fn(text) + '</p>';
});
p('You & Me'); // -> '<p>You &amp; Me</p>'